Grinding machine



, gw@ 32, E932. H.v F. KoEs'rLlN Filed March 19, 1928 l I N V EN TOR. l/enmcvs Ff Hveslin .W ...En

M f. A 6.

A TTORNE Y.

Patented June 7, '1932' TES" *PATE NT: OFFICE Hannan r. konstanter DETROIT, :lyricsmania l' GRINDING MACHINE ppiicaaon niet maren is, 192s. serial No. 262,622.

- My invention relates to a new and useful '6-6 of Fig. 5.

improvement ina grinding 'machine and particularlyl the inountings for the machine.

It is an object of the present invention to provide a. machine of this class which may be vertically adjusted relatively tio the work and also horizontally moved relatively to the work.

Another object vision in a grinding machine of this classof inountings'whereby the machine may be tilted at anl angle to the workpiece or the-sup porting bed for the workpiece to provide a grind ing machine for grindinga taper.

Another object of the invention is the provision in afgrinding machine of this class of easily operated means fordiessing the gr1nding Wheel and particularly ,for removing projections from the grinding wheel or localized depressions. f

' Another object of the invention is the pro-v vision of amechanism of this class which will` be simple iii structure, economical of manufacture and highly eilicient in use.

Another object of the invention is the provision of a machine of this class which will be easilyan'd quickly assembled, easily operated and possessed of a minimum weight and with durability.

Other objects will appear hereinafter,

.The invention consists in the combination and arrangement of parts hereinaftery de-A scribed and claimed.

The invention will be best understood by a reference to the accompanying drawing of Fig. 1. i

Fig. 3 is a fragmentary sectional view, taken on line 3--3 of Fig. 2.

Fig. 4 is a view taken on line -et of Fig. 1 showing parts in section and parts in side elevation.

Fig. 5 is a fragmentary sectional view taken on line 5-5 of Fig. 4.

of the invention is the pro Fig. A6 is a sectional view taken on line vI have shown the invention `mounted on a bed 9 which is supported by suitableklegsyl, the invention eit er being secured to a bed -of this class which may be portable or being portable itself, and-adapted for mounting on various supporting bodies.

The invention comprises a `standard 11 ist which isprovided with a base 12 havingslots 60 14 formed therein, throughwhich project screws 13 for securing the base I2 to the bed 9. The standard 11 is formed partially cy#l lindrical at its central portion 11 to provide a greater amount of body. `Formed inthe face of the standard 11, centra1ly thereof, is a dovetailed groove 15 havinga cylindrical groove 16 forinedlcentral'ly thereof and extending longitudinally of the stand ard 11.

A nut 17 is adapted to engage in ythe groove l0 16, a threaded rod 18 beingthreaded-into the nut 17 and passing through a cover 19 mounted on the standard 11, so that the rod 18 vis rotatablyy mounted but fixed against longitudinal movement, a crank 20 being. xedly mounted on the rod 18 for effecting its rotation. A plate 21 is adapted to .engage the' grooved face of the standard 11 and is piovided with a dovetailed tongue 22 slidably mounted in the dovetailed groove 15. A a

screwl 23 isprojected through the plate 21 and threaded into the nut 17 to securely lock the nut 17 in arecess 24 formed in the tongue 22,

the side of the nut 17 engaging'in the recess being provided with a flat as clearly appears g5 in Fig. 2. The threading of the rod 18, therefore, will elect vertical -movement of the plate 21. A disc 25 is provided with arcuate slots 27, through which are projected screws 26 which thread linto the plate 21 and serve to mount the disc 25,0n the plate 21. Projecting outwardly from the-outer. face of the disc 25 is a head 28 which is formed preferably square and adapted to engage in a cu shaped, member 29, projecting outwardl) fromthe plate 30, which is provided on its outer face with a dovetailed groove 31 for the rece tion of' the dovetailed tongue 32 which projectsoutwardly from the cas1ng33 .of thev "motor". This'cas'ing 33 and the motor contained'therein are of a well known type of structure. F

A nut 34 is adapted to engage in a horizontally dis osed groove 34 formed in the plate 30 and t e recess34 formed in the tongue 32. A threaded .stem 35l is threaded through 1 the nut 34f-and rotatabl mounted #on the plate 30, so that it is fixe against longitudinal movement relatively to the plate 30. ,A

crank 36 is fixedly mounted upon the stem 35 to effect rotation thereof. The arrangement is such that upon rotation of the stem 35 the casing 33 is moved horizontally,the direction of movement de ending upon the direc-y -tionof rotation of t e stem 35.- Secured to j the plate 30 and projecting laterally outward This tool retainer l43 is formed with a.

groove45 on fits inner face and at one side thereof there is mounteda rack bar 46 adapted to mesh with a pinion which is ixedly mounted lupon the shaft 47 which dprojects through the plate 41 and is provide with a head 48 carrying the crank 49 whereby the shaft 47 and the pinion 50 may be rotated. Projecting outwardl from one face of the tool carrier 4 3 is a 'diamond dressing tool 51 held in position bythe set screw 51.

-Threaded into the inner face of the disc 25, centrally thereof, is a stud 52 carrying the disc r53 which isv ada ted to engage in a recess 54 formed in the ace of the disc 21, the disc or head 53 servin as a bearing for supporting the disc 25 w en rotated relatively to the disc 21. j

A shield 55 is carried b the casing- 33,

,In operation, the workpiece is extended into the opening 38 and'thegrinding'wheel 37 moved into enga ement therewith for grinding purposes. y a rotation of the rod 35 the grinding wheel 37 may be adjusted horizontally relativelyto the workpiece, and, by a rotation ofthe rod 18 the inding wheel may be adjusted vertically relitively to the workpiece.

When desired to perform face grinding, the plate 39 may be positioned over the opening 38. When it is desired to adjust the axis of the grinding wheel relatively tothe workpiece, or the su porting bed, the screws 26' may be loosene to permit the desired rota- 't tion of the disc 25 relatively to the disc 2l,`the peripheries ofthese discs being graduated, as shown in Fig. 1, to indicate the degree of tilt. When the desired degree of tilt is attained the screws 26 may be tightened to retain the varions parts in fixed relation.

When it is desired to dress the grinding wheel 37 or to remove depressions or projections therefrom at some localized point, the

diamond or dressin tool 51 is mountedin position as describe and brought into a position so as to contact with the periphery of the grinding wheel 37 when the member 35 is rotated in one direction suliiciently. When the contact has been made, the dressing tool or diamond 51 may be'reciprocated axially of the grinding wheel `37 b a rotation of the .shaft 47 alternately in di erent directions.

' It is thus seen that I have provided a grinding machine which may be adjusted and horizontall movedrelatively to the workpiece, and whichV is provided with a dressing tool which may be reciprocated axially of the grinding-wheel. l

Wh'le I have illustrated and described the preferred form of my invention, I do not wish In la grinding machine of` the class described',`a supporting bed,v a supportingv standard, a vertically movable slide mounted on said standard, means to move said slide vertically, a 'head pivotally secured to said slide-and adjustable about a horizontal axis, a driving-'means slidably carried by said head,"means to move said driving means horizontally'relative' tosaid head, a grinding wheel mountedon and rotatable by said driving means, said grindin wheel lying in a horizontal plane, a brac et secured to and projecting voutwardlyfrom said head, a dressing tool carried by said bracket, and means for movin said dressing tool verticall relative to sai bracket and grinding wheel. f.

In testimony whereof I have signed the foregoing specification,

. HERMAN F. KOESTLIN.

' to limit myself to the precise detais of struc- 

